Home / 8,280.30-12,428.25-3,020.39

Finding the Fourth Proportional to 8,280.30, 12,428.25 and 3,020.39

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Solution

The fourth proportional to 8,280.30, 12,428.25 and 3,020.39 is: 4,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.30 : 12,428.25 = 3,020.39 : x
  2. Step 2: Convert to fraction form
    8,280.30/12,428.25 = 3,020.39/x
  3. Step 3: Cross multiply
    8,280.30x = 12,428.25 × 3,020.39
  4. Step 4: Simplify right side
    8,280.30x = 37,538,162.02
  5. Step 5: Solve for x
    x = 37,538,162.02/8,280.30
  6. Step 6: Final answer
    x = 4,533.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.